The nurse is caring for a client newly diagnosed with hypertension. Which statement by the client indicates the need for further teaching?

A. The pain can be severe and sudden at rest: This statement is more characteristic of unstable angina, where chest pain can occur at rest or with minimal exertion and is often severe and unpredictable.

B. The pain persists with rest and organic nitrates: This statement is more indicative of unstable angina or variant (Prinzmetal's) angina. Stable angina typically improves with rest and nitroglycerin (an organic nitrate).

C. The pain usually lasts longer than 20 minutes: Stable angina pain typically lasts for a few minutes (usually less than 5 to 10 minutes) and resolves with rest or nitroglycerin. Pain lasting longer than 20 minutes may indicate an acute coronary syndrome such as unstable angina or myocardial infarction.

D. Exertion and anxiety can trigger the pain: This statement is accurate for stable angina. Exertion, such as physical activity or emotional stress, can trigger anginal pain in individuals with stable angina due to increased oxygen demand by the heart.

A. This result indicates muscle injury but does not specify the source.

This statement is partly correct. An elevated troponin I level does indicate muscle injury, specifically damage to the heart muscle. However, troponin I is highly specific to cardiac muscle, so an elevated level would indeed specify the source as cardiac or myocardial injury.

B. Because the client has a history of unstable angina, this is a poor indicator of myocardial injury.

This statement is incorrect. A history of unstable angina does not diminish the significance of an elevated troponin I level. In fact, unstable angina is itself a serious condition that can lead to myocardial injury or heart attack, and an elevated troponin I level in this context indicates ongoing or recent myocardial damage.

C. This is only an accurate indicator of myocardial damage when it reaches its peak in 24 hours.

This statement is not entirely accurate. While it is true that troponin I levels may continue to rise and peak within 12-24 hours after the onset of myocardial injury, an elevated troponin I level at any point is still a significant indicator of myocardial damage. It's essential to recognize elevated troponin I levels promptly to initiate appropriate interventions and monitor the client's cardiac status closely.

D. This is an accurate indicator of myocardial injury.

This statement is correct. An elevated troponin I level is a highly sensitive and specific marker of myocardial injury. It indicates damage to the heart muscle, which can occur due to conditions like unstable angina, heart attack (myocardial infarction), myocarditis, or other cardiac issues. Therefore, recognizing an elevated troponin I level in a client with unstable angina is crucial for proper management and further evaluation.